(19)
(11) EP 0 333 097 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.08.1990 Bulletin 1990/35

(43) Date of publication A2:
20.09.1989 Bulletin 1989/38

(21) Application number: 89104397.8

(22) Date of filing: 13.03.1989
(51) International Patent Classification (IPC)4: F02M 47/02, F16K 1/42
(84) Designated Contracting States:
DE GB

(30) Priority: 14.03.1988 JP 58176/88

(71) Applicant: YAMAHA MOTOR CO., LTD.
Iwata-shi Shizuoka-ken, 438 (JP)

(72) Inventors:
  • Taue, Jun
    Iwata-gun Shizuoka-ken (JP)
  • Yoshida, Takeo
    Iwata-shi Shizuoka-ken (JP)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Maximilianstrasse 58
80538 München
80538 München (DE)


(56) References cited: : 
   
       


    (54) Relief valve assembly for accumulator type fuel injection nozzle


    (57) An improved relief valve element (53) for an accumulator type fuel injection nozzle (11). The relief valve element (53) and relief valve seat (81) are formed with a substantially greater effective sealing area (82) than the port (54) which is controlled. Pressure relief passages (83, 84, 101, 102, 151, 152, 201, 202) extend through either the valve element (53) or the valve seat (81) outwardly of the control port (54) so as to permit fluid to flow therethrough upon the closure movement of the valve element (53) to facilitate its movement and to assist in sealing.







    Search report